The algal polysaccharide carrageenans can act as an elicitor of plant defence

Grape marc extract acts as elicitor of plant defence responses.

Plant protection based on novel alternative strategies is a major concern in agriculture to sustain pest management. The marc extract of red grape cultivars reveals plant defence inducer properties. Treatment with grape marc extract efficiently induced hypersensitive reaction-like lesions with cell death evidenced by Evans Blue staining of tobacco leaves. Examination of the infiltration zone an...

Polysaccharide-Specific Isoperoxidases as an Important Component of the Plant Defence System

nano-rods zno as an efficient catalyst for the synthesis of chromene phosphonates, direct amidation and formylation of amines

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non-protein enzymes: rna can act as an enzyme

within the past few years, neat scheme has been overturned by the discovery that rna can act as an enzyme. what does the starting finding of rna enzymes imply? thre first implication is that one can no longer assume a protein lies behind every catalytic activity of the cell. it now appears that several of the operations that tailor an ran molecule into its final form are at least in part cataly...

Elemental sulphur as an induced antifungal substance in plant defence.

Man's oldest fungicide has probably long functioned in this role in plants, as a natural component of induced antifungal defence. Elemental sulphur (S(0)) is the only inorganic phytoalexin and the only phytoalexin produced by so many different taxa. S(0) (detected by GC-MS as (32)S(8)) is produced in representative species of Sterculiaceae (cocoa), Solanaceae (tomato, tobacco), Malvaceae (cotto...